Finding the Fourth Proportional to 1,377,474,525.75, 1,900,896,692.07 and 774,644,970.12
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Solution
The fourth proportional to 1,377,474,525.75, 1,900,896,692.07 and 774,644,970.12 is: 1,068,999,849.87
Step by Step Solution
- Step 1: Write the proportion equation
1,377,474,525.75 : 1,900,896,692.07 = 774,644,970.12 : x - Step 2: Convert to fraction form
1,377,474,525.75/1,900,896,692.07 = 774,644,970.12/x - Step 3: Cross multiply
1,377,474,525.75x = 1,900,896,692.07 × 774,644,970.12 - Step 4: Simplify right side
1,377,474,525.75x = 1,472,520,061,229,772,032 - Step 5: Solve for x
x = 1,472,520,061,229,772,032/1,377,474,525.75 - Step 6: Final answer
x = 1,068,999,849.87
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.